Installation Guide

BIG ASS FAN 2025
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Contents
Introduction
Important Safety Information ii
Thank You 1
About Big Ass Fans 1
About this Fan 1
Pre-Installation
Parts Included 2
Tools Needed 3
Fan Diagram 4
Preparing the Work Site 5
Installing the Fan
1. Select Proper Angle Irons 6
2. Pre-drill Angle Irons 7
3. Secure Angle Irons (if span is longer than 8 ft) 7
4a. Fasten Single Angle Irons to Roof Structure Mounting Points 8
4b. Fasten Double Angle Irons to Roof Structure Mounting Points 9
5. Route Wiring and Safety Cable into Extension Tube 10
6. Attach Upper Mount and Upper Mounting Brace (to Extension Tube) 10
7. Attach Upper Mount (to Angle Irons) 11
8. Secure Safety Cable (to Main Fan Unit) 12
9. Attach Main Fan Unit (to Extension Tube) 12
10. Tighten Hardware 13
11. Secure Safety Cable (to Angle Irons) 14
12. Connect Power and Wall Controller Wiring 14
13. Install Cover Plate Assembly 15
14. Install Lower Cover Mounting Bracket 15
15. Install Lower Cover 16
16. Install Trim Ring 16
Installing Airfoils
1. Attach Airfoil Tips (to Airfoils) 17
2. Position Airfoils 17
3. Attach Airfoils (to Main Fan Unit) 18
Wiring the Fan
Electrical Safety Information 19
Power Requirements 19
Wiring Diagram 19
Wiring: Fire Signal Relay 20
Mounting the Wall
Controller
Dimensions 21
Mounting to a Wall 21
Mounting to a Junction Box 21
Operating the Fan
Operating the Wall Controller 22
Changing the Fan Direction 22
Heating Season 23
Cooling Season 23
Preventive Maintenance
Annual Preventive Maintenance 24
General Preventive Maintenance 24
Annual Maintenance
Checklist
Annual Maintenance Checklist 25
Troubleshooting
General Troubleshooting 27
Electrical Troubleshooting 28
Replacing Fuses 29
Warranty
Warranty Policy 30
Acknowledgment & Return Instructions 34
Warranty Claim Form Instructions 35
Warranty Claim Form 37
Responsibility Agreement 38